A decreased survival of proliferated cells in the hippocampus is associated with a decline in spatial memory in aged rats

Neuroscience Letters
Henny WatiShigenobu Kanba

Abstract

In aged rats, although learning and memory impairment is prominent, both the number of granular cells and the degree of neuronal progenitor proliferation in the hippocampus are known to be preserved. We examined the association between the survival of newly generated neurons in the hippocampus and the learning ability in aged rats. By using BrdU, a cell proliferation marker to determine neurogenesis and contextual fear conditioning to determine learning ability, we found that in aged rats, along with memory impairment, the survival of both the proliferated cells at baseline and those enhanced by contextual fear conditioning decreased remarkably. These results suggest that the integration of newly generated neurons into hippocampal circuitry is decreased with aging, this phenomenon may, in part, explain the decline in learning and memory in aged rats.

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Citations

Apr 3, 2007·European Archives of Psychiatry and Clinical Neuroscience·Friederike Klempin, Gerd Kempermann
Nov 23, 2006·Antioxidants & Redox Signaling·Ariel KamslerMenahem Segal
Jan 13, 2010·Journal of Ethnopharmacology·Se Jin ParkJong Hoon Ryu
Jun 26, 2007·Neurobiology of Learning and Memory·Christina T Siwak-TappCarl W Cotman
Jan 29, 2008·Aging Cell·Elodie Drapeau, Djoher Nora Abrous
Oct 31, 2012·Phytotherapy Research : PTR·Chang Hwan LeeJong Hoon Ryu
Sep 28, 2010·Neuroscience and Biobehavioral Reviews·Riejanne Seigers, Joanna E Fardell
Oct 26, 2011·Pharmacology, Biochemistry, and Behavior·Neeraj GuptaPing Liu
Jun 27, 2014·Frontiers in Neuroscience·Alonso Martinez-Canabal
Feb 8, 2020·Biomolecules·Mark D Spritzer, Ethan A Roy
Nov 12, 2013·International Journal of Molecular Medicine·Jingang HouChangkeun Sung

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